<template>
  <div>
    <van-cell-group title="多条折线图">
      <div id="myChart" ref="myChart" />
    </van-cell-group>
  </div>
</template>

<script>
import * as echarts from 'echarts';
export default {
  data() {
    return {
      chart: null,
      options: {}
    };
  },
  mounted() {
    this.initOptions();
  },
  methods: {
    initOptions() {
      var chartDom = document.getElementById('myChart');
      var myChart = echarts.init(chartDom);
      var option;

      option = {
        xAxis: {
          type: 'category',
          data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
        },
        yAxis: {
          type: 'value'
        },
        series: [
          {
            data: [120, 200, 150, 80, 70, 110, 130],
            type: 'bar',
            showBackground: true,
            backgroundStyle: {
              color: 'rgba(180, 180, 180, 0.2)'
            }
          }
        ]
      };
      option && myChart.setOption(option);
    }
  }
};
</script>

<style scoped>
#myChart {
  width: 100%;
  height: 280px;
}
</style>
